Decorative smoke detector cover



FIG. 1 is a top plan view of a decorative smoke detector cover showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side view thereof, with the remaining three sides appearing the same;

FIG. 4 is a top perspective cross sectional view thereof, with the dotted outline representing a smoke detector.

The center knob shown in dotted outline and the smoke detector shown in dotted outline form no part of the claimed design. 

The ornamental design for a decorative smoke detector cover, as shown and described. 